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Description:
easy realtime database
Easy Realtime Database #
This is a helper package for Firebase realtime database.
Widgets #
Value and toggle #
You can use with the combination of Value widget and toggle function to toggle a value of a node(path) in Realtime database.
Value(
ref: FirebaseDatabase.instance.ref('/test/value'),
builder: (v, r) => IconButton(
icon: Text('Value Test: $v'),
onPressed: () => toggle(r, 'yo'),
),
),
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More comprehensive example:
Value(
ref: FirebaseDatabase.instance.ref('tmp/a'),
builder: (v, r) => TextButton(
child: Text('Value: $v'),
onPressed: () => r.set(
'Time : ${DateTime.now()}',
),
),
),
Value.once(
ref: FirebaseDatabase.instance.ref('tmp/a'),
builder: (v, r) => TextButton(
child: Text('Value: $v'),
onPressed: () => r.set(
'Time : ${DateTime.now()}',
),
),
),
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DatabaseLimitedListView #
See the example
DatabaseLimitedQueryBuilder #
See the example
ValueListView #
Use this widget to list the values of a node in Realtime database. This can handle most of the cases of listing the values of a node in Realtime database.
If you don't call fetchMore(index), it will only fetch the first page of data.
If you want to get only the first page of list to show the latest or the oldest, you don't have to call fetchMore.
In this example, it is using PageView to list the data. You can use ListView, GridView, CarouselView, or even Column, Row, or whatever.
Use reverseQuery to show the oldest data first.
Example:
ValueListView(
query: FirebaseDatabase.instance.ref('/tmp'),
pageSize: 3,
builder: (snapshot, fetchMore) {
return PageView.builder(
itemCount: snapshot.docs.length,
itemBuilder: (context, index) {
print('index: $index');
fetchMore(index);
return ListTile(
contentPadding: const EdgeInsets.all(64),
title: Text(snapshot.docs[index].key!),
);
},
);
},
errorBuilder: (s) => Text('Error: $s'),
loadingBuilder: () => const CircularProgressIndicator(),
emptyBuilder: () => const Text('Empty'),
),
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The example below is using reverseQuery to show the oldest data first.
ValueListView(
query: FirebaseDatabase.instance.ref('/tmp'),
pageSize: 3,
reverseQuery: true,
builder: (snapshot, fetchMore) {
return ListView.builder(
itemCount: snapshot.docs.length,
itemBuilder: (context, index) {
print('index: $index');
fetchMore(index);
return ListTile(
contentPadding: const EdgeInsets.all(64),
title: Text(snapshot.docs[index].key!),
);
},
);
},
errorBuilder: (s) => Text('Error: $s'),
loadingBuilder: () => const CircularProgressIndicator(),
emptyBuilder: () => const Text('Empty'),
),
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License
For personal and professional use. You cannot resell or redistribute these repositories in their original state.
Files:
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